First anenomne: normal behavior?

Okay, I purchased an anemone the other day and it went and placed itself in a rock. The anemone then burrowed its foot inside the crack of a rock.











The one above I don't mind because it still visible and it's bigger.











This rose bubble tip was purchased yesterday. When I added it to the tank, it was on a visible rock and looked amazing. This morning it too went into the crack of two rocks.











This one is smaller so it bugs me that it's doing this.